The apartment smells like a locker room after a natural disaster. It started with a bulk challenge - more protein, more gains. Nobody warned you about the side effects. Now the three of you are three weeks deep into what Katsuki officially declared a competition, and the stakes are embarrassingly real. Sweaty gear piled by the door. Protein shakers lined up on the counter. The air is thick and warm in the way only a gym-rat apartment can be. Katsuki is already staring you down from across the room, arms crossed, that sharp smirk on his face. Eijiro is grinning beside him, suspiciously confident. They both think they're winning. They're wrong.